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-rw-r--r--drivers/power/bq24257_charger.c67
1 files changed, 64 insertions, 3 deletions
diff --git a/drivers/power/bq24257_charger.c b/drivers/power/bq24257_charger.c
index 15e0e9395371..b617c3a20652 100644
--- a/drivers/power/bq24257_charger.c
+++ b/drivers/power/bq24257_charger.c
@@ -78,6 +78,7 @@ struct bq24257_init_data {
u8 vbat; /* regulation voltage */
u8 iterm; /* termination current */
u8 iilimit; /* input current limit */
+ u8 vovp; /* over voltage protection voltage */
};
struct bq24257_state {
@@ -200,6 +201,13 @@ static const u32 bq24257_iilimit_map[] = {
#define BQ24257_IILIMIT_MAP_SIZE ARRAY_SIZE(bq24257_iilimit_map)
+static const u32 bq24257_vovp_map[] = {
+ 6000000, 6500000, 7000000, 8000000, 9000000, 9500000, 10000000,
+ 10500000
+};
+
+#define BQ24257_VOVP_MAP_SIZE ARRAY_SIZE(bq24257_vovp_map)
+
static int bq24257_field_read(struct bq24257_device *bq,
enum bq24257_fields field_id)
{
@@ -415,6 +423,17 @@ enum bq24257_in_ilimit {
IILIMIT_NONE,
};
+enum bq24257_vovp {
+ VOVP_6000,
+ VOVP_6500,
+ VOVP_7000,
+ VOVP_8000,
+ VOVP_9000,
+ VOVP_9500,
+ VOVP_10000,
+ VOVP_10500
+};
+
enum bq24257_port_type {
PORT_TYPE_DCP, /* Dedicated Charging Port */
PORT_TYPE_CDP, /* Charging Downstream Port */
@@ -586,7 +605,8 @@ static int bq24257_hw_init(struct bq24257_device *bq)
} init_data[] = {
{F_ICHG, bq->init_data.ichg},
{F_VBAT, bq->init_data.vbat},
- {F_ITERM, bq->init_data.iterm}
+ {F_ITERM, bq->init_data.iterm},
+ {F_VOVP, bq->init_data.vovp},
};
/*
@@ -656,6 +676,28 @@ static const struct power_supply_desc bq24257_power_supply_desc = {
.get_property = bq24257_power_supply_get_property,
};
+static ssize_t bq24257_show_ovp_voltage(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct power_supply *psy = dev_get_drvdata(dev);
+ struct bq24257_device *bq = power_supply_get_drvdata(psy);
+
+ return scnprintf(buf, PAGE_SIZE, "%u\n",
+ bq24257_vovp_map[bq->init_data.vovp]);
+}
+
+static DEVICE_ATTR(ovp_voltage, S_IRUGO, bq24257_show_ovp_voltage, NULL);
+
+static struct attribute *bq24257_charger_attr[] = {
+ &dev_attr_ovp_voltage.attr,
+ NULL,
+};
+
+static const struct attribute_group bq24257_attr_group = {
+ .attrs = bq24257_charger_attr,
+};
+
static int bq24257_power_supply_init(struct bq24257_device *bq)
{
struct power_supply_config psy_cfg = { .drv_data = bq, };
@@ -734,6 +776,15 @@ static int bq24257_fw_probe(struct bq24257_device *bq)
bq24257_iilimit_map,
BQ24257_IILIMIT_MAP_SIZE);
+ ret = device_property_read_u32(bq->dev, "ti,ovp-voltage",
+ &property);
+ if (ret < 0)
+ bq->init_data.vovp = VOVP_6500;
+ else
+ bq->init_data.vovp = bq24257_find_idx(property,
+ bq24257_vovp_map,
+ BQ24257_VOVP_MAP_SIZE);
+
return 0;
}
@@ -859,10 +910,18 @@ static int bq24257_probe(struct i2c_client *client,
}
ret = bq24257_power_supply_init(bq);
- if (ret < 0)
+ if (ret < 0) {
dev_err(dev, "Failed to register power supply\n");
+ return ret;
+ }
- return ret;
+ ret = sysfs_create_group(&bq->charger->dev.kobj, &bq24257_attr_group);
+ if (ret < 0) {
+ dev_err(dev, "Can't create sysfs entries\n");
+ return ret;
+ }
+
+ return 0;
}
static int bq24257_remove(struct i2c_client *client)
@@ -872,6 +931,8 @@ static int bq24257_remove(struct i2c_client *client)
if (bq->iilimit_autoset_enable)
cancel_delayed_work_sync(&bq->iilimit_setup_work);
+ sysfs_remove_group(&bq->charger->dev.kobj, &bq24257_attr_group);
+
bq24257_field_write(bq, F_RESET, 1); /* reset to defaults */
return 0;